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阅读理解。 All living things on the earth need other living things to live. Nothing lives alone. Most animals must live in a group, and even a plant grows close together with others of the same kind. Sometimes one living thing kills another, one eats and the other is eaten. Each kind of life eats another kind of life in order to live, and together they form a food chain. Some food chains become broken up if one of the links disappears. All life need sunlight to live on. But only plants can use sunlight directly. Plants are 'factories'. They make food from sunlight, water and things in the soil and air. Plants feed all other living things. Animals can only use the sun's energy after it has been changed into food by plants. Some animals feed directly on plants, others eat smaller animals. Meat-eating animals are only eating plants directly. What about human beings? We are members of many food chains. We eat wheat, rice, vegetables. fruits and so on. We also eat meat and drink mild. But men often break up the food chains. They kill wild animals. They also make rivers, lakes and seas dirty. When these rivers, lakes and seas are polluted, the fish in them can not be eaten. If men eat the fish, they will get diseases. Each form of life is linked to all others. Breaking the lines puts all life in danger. 1. How does every living thing on the earth live? [     ] A. Each plant can live alone. B. Each animal can live alone. C. If living things want to live, they must kill each other. D. Every living thing on the earth cannot live without others. 2. Which living things can use the sun's energy directly? [     ] A. Animals. B. Plants. C. Both A and B. D.All living things. 3. What do plants make food from? They make food from _____. [     ] A. sunlight, water and things in the soil and air B. water, sunlight and things in the soil C. water and things in the soil and air D. water, sunlight and things in the soil 4. Who often break up the food chain? [     ] A. Human beings. B. Animals. C. Plants and animals. D. Men and wild animals. 5. Which of the following do you think is the best title for this passage? [     ] A. Animals. B. Plants. C. Food chains. D. Living things.
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参考答案:
举一反三
【判断题】过渡线不能与过渡圆弧的轮廓线接触,必须保持一定间隙。
A.
正确
B.
错误
【单选题】不属于CT机硬件结构的是()
A.
扫描机架
B.
扫描检查床
C.
计算机软件系统
D.
激光照相机
E.
计算机显示器
【判断题】Researchers set some cameras in the area in order to videotape the daily life of the Sumatran rhino for a documentary.
A.
正确
B.
错误
【单选题】rhino
A.
猩猩
B.
北极熊
C.
驯鹿
D.
犀牛
【单选题】不属于CT机硬件结构的是
A.
扫描机架
B.
扫描检查床
C.
X线发生系统
D.
计算机系统
E.
自动洗片机
【单选题】不属于CT机硬件结构的是
A.
扫描机架
B.
检查床
C.
X线发生系统
D.
计算机系统
E.
激光相机
【单选题】rhino模型在keyshot打开之前,需要在rhino中做
A.
在rhino中把模型全部影藏,再保存
B.
在rhino中把模型全部炸开,再保存
C.
在rhino中按模型材质不同,分好图层,再保存。
D.
在rhino中把模型全部群组并炸开,再保存。
【多选题】下面哪些属于Rhino 5.0的新增功能?
A.
显示效果增强
B.
兼容性更好
C.
命令执行人性化
D.
延续 Rhino 4. 0 的新增功能选项卡
【单选题】How old is the rhino Sudan?
A.
14
B.
15
C.
40
D.
45
【单选题】How many Sumatran tigers remain in the world?
A.
About 60.
B.
More than 500.
C.
Less than 500.
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